import {round} from "lodash-es";

/**
 *
 * @param component 需要注册的组件
 * @param alias 组件别名
 * @returns any
 */
export const withInstall = <T>(component: T, alias?: string) => {
    const comp = component as any;
    comp.install = (app: any) => {
        app.component(comp.name || comp.displayName, component);
        if (alias) {
            app.config.globalProperties[alias] = component;
        }
    };
    return component as T & Plugin;
};

/**
 * @param str 需要转下划线的驼峰字符串
 * @returns 字符串下划线
 */
export const humpToUnderline = (str: string): string => {
    return str.replace(/([A-Z])/g, "-$1").toLowerCase();
};

/**
 * @param str 需要转驼峰的下划线字符串
 * @returns 字符串驼峰
 */
export const underlineToHump = (str: string): string => {
    if (!str) return "";
    return str.replace(/\-(\w)/g, (_, letter: string) => {
        return letter.toUpperCase();
    });
};

export const setCssVar = (prop: string, val: any, dom = document.documentElement) => {
    dom.style.setProperty(prop, val);
};

/**
 * 查找数组对象的某个下标
 * @param {Array} ary 查找的数组
 * @param {Functon} fn 判断的方法
 */
// eslint-disable-next-line
export const findIndex = <T = Recordable>(ary: Array<T>, fn: Fn): number => {
    if (ary.findIndex) {
        return ary.findIndex(fn);
    }
    let index = -1;
    ary.some((item: T, i: number, ary: Array<T>) => {
        const ret: T = fn(item, i, ary);
        if (ret) {
            index = i;
            return ret;
        }
    });
    return index;
};

export const trim = (str: string) => {
    return str.replace(/(^\s*)|(\s*$)/g, "");
};

/**
 * @param {Date | number | string} time 需要转换的时间
 * @param {String} fmt 需要转换的格式 如 yyyy-MM-dd、yyyy-MM-dd HH:mm:ss
 */
export const formatTime = (time: Date | number | string, fmt: string) => {
    if (!time) return "";
    else {
        const date = new Date(time);
        const o = {
            "M+": date.getMonth() + 1,
            "d+": date.getDate(),
            "H+": date.getHours(),
            "m+": date.getMinutes(),
            "s+": date.getSeconds(),
            "q+": Math.floor((date.getMonth() + 3) / 3),
            S: date.getMilliseconds()
        };
        if (/(y+)/.test(fmt)) {
            fmt = fmt.replace(RegExp.$1, (date.getFullYear() + "").substr(4 - RegExp.$1.length));
        }
        for (const k in o) {
            if (new RegExp("(" + k + ")").test(fmt)) {
                fmt = fmt.replace(
                    RegExp.$1,
                    RegExp.$1.length === 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length)
                );
            }
        }
        return fmt;
    }
};

/**
 * 生成随机字符串
 */
export const toAnyString = () => {
    const str: string = "xxxxx-xxxxx-4xxxx-yxxxx-xxxxx".replace(/[xy]/g, (c: string) => {
        const r: number = (Math.random() * 16) | 0;
        const v: number = c === "x" ? r : (r & 0x3) | 0x8;
        return v.toString();
    });
    return str;
};

export const generateUUID = () => {
    if (typeof crypto === "object") {
        if (typeof crypto.randomUUID === "function") {
            return crypto.randomUUID();
        }
        if (typeof crypto.getRandomValues === "function" && typeof Uint8Array === "function") {
            const callback = (c: any) => {
                const num = Number(c);
                return (num ^ (crypto.getRandomValues(new Uint8Array(1))[0] & (15 >> (num / 4)))).toString(
                    16
                );
            };
            return "10000000-1000-4000-8000-100000000000".replace(/[018]/g, callback);
        }
    }
    let timestamp = new Date().getTime();
    let performanceNow =
        (typeof performance !== "undefined" && performance.now && performance.now() * 1000) || 0;
    return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, (c) => {
        let random = Math.random() * 16;
        if (timestamp > 0) {
            random = (timestamp + random) % 16 | 0;
            timestamp = Math.floor(timestamp / 16);
        } else {
            random = (performanceNow + random) % 16 | 0;
            performanceNow = Math.floor(performanceNow / 16);
        }
        return (c === "x" ? random : (random & 0x3) | 0x8).toString(16);
    });
};

/**
 * element plus 的文件大小 Formatter 实现
 *
 * @param row 行数据
 * @param column 字段
 * @param cellValue 字段值
 */
// @ts-ignore
export const fileSizeFormatter = (row, column, cellValue) => {
    const fileSize = cellValue;
    const unitArr = ["Bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
    const srcSize = parseFloat(fileSize);
    const index = Math.floor(Math.log(srcSize) / Math.log(1024));
    const size = srcSize / Math.pow(1024, index);
    const sizeStr = size.toFixed(2); //保留的小数位数
    return sizeStr + " " + unitArr[index];
};

/**
 * 将值复制到目标对象，且以目标对象属性为准，例：target: {a:1} source:{a:2,b:3} 结果为：{a:2}
 * @param target 目标对象
 * @param source 源对象
 */
export const copyValueToTarget = (target, source) => {
    const newObj = Object.assign({}, target, source);
    // 删除多余属性
    Object.keys(newObj).forEach((key) => {
        // 如果不是target中的属性则删除
        if (Object.keys(target).indexOf(key) === -1) {
            delete newObj[key];
        }
    });
    // 更新目标对象值
    Object.assign(target, newObj);
};

// TODO @puhui999：返回要带上 .00 哈.例如说 1.00
/**
 * 将一个整数转换为分数保留两位小数
 * @param num
 */
export const formatToFraction = (num: number | string | undefined): number => {
    if (typeof num === "undefined") return 0;
    const parsedNumber = typeof num === "string" ? parseFloat(num) : num;
    return parseFloat((parsedNumber / 100).toFixed(2));
};

/**
 * 将一个分数转换为整数
 * @param num
 */
export const convertToInteger = (num: number | string | undefined): number => {
    if (typeof num === "undefined") return 0;
    const parsedNumber = typeof num === "string" ? parseFloat(num) : num;
    // TODO 分转元后还有小数则四舍五入
    return Math.round(parsedNumber * 100);
};

/**
 * 元转分
 */
export const yuanToFen = (amount: string | number): number => {
    return Math.round(Number(amount) * 100);
};

/**
 * 分转元
 */
export const fenToYuan = (amount: string | number): number => {
    return Number((Number(amount) / 100).toFixed(2));
};

/**
 * 距离当前时间间隔
 */
export function getCurrentDays(dataString: string) {
    let startDate = Date.now();
    let endDate = Date.parse(dataString);
    return round((startDate - endDate) / (24 * 60 * 60 * 1000));
}
